Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

Star ship acceleration physics

  • ms245004
  • · Replies 3 ·
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3

Effects of high and low pressure on the human body.

  • SrEstroncio
  • · Replies 3 ·
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3

Force on charges separated by grounded spherical condcutor

  • Leah_Sh
  • · Replies 1 ·
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1

Finding a Particle's Position with Given Velocity and Time

  • ms245004
  • · Replies 2 ·
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2

Different round objects of same mass on an incline

  • zorro
  • · Replies 10 ·
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10

Which Football Kicks Higher, Travels Farther, or Stays Airborne Longer?

  • needhelpfast
  • · Replies 6 ·
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6

Rate of change of a right triangle

  • vande060
  • · Replies 6 ·
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6

Dimensional Analysis of pV and Kave: Are They Equivalent to Work?

  • mrandymcnutt
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1

Uniform Accelerated Motion - Ticker Tape Experiment

  • Iniuria12
  • · Replies 2 ·
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2

Iv'e got every value except velocity initial and acceleration. help ?

  • pokeefer
  • · Replies 3 ·
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3

Projectile: Find initial velocity without time

  • JJBladester
  • · Replies 2 ·
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2
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1

What is the horizontal range of a projectile fired into the air?

  • ihatecats2014
  • · Replies 1 ·
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1

How Does Evaporation Relate to Internal Energy and Molecular Kinetics?

  • Jeffopolis
  • · Replies 15 ·
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15

Science behind car safety features (broad, open-ended question, sorry)

  • deman
  • · Replies 3 ·
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3

Understanding charge transfer on metal spheres. Help please

  • sitthegamsat
  • · Replies 3 ·
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3

Fairly easy acceleration problem stumping me

  • alpinecg
  • · Replies 3 ·
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3

2D Kinematics with multiple unknown variables.

  • Blbuford
  • · Replies 1 ·
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1

Phase Difference for Interference of Traveling Waves on a Stretched String

  • crazy_craig
  • · Replies 2 ·
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2

How Much Work to Stretch a Bungee Cord 1 Meter?

  • Amber_
  • · Replies 6 ·
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6

Energy conservation and circular motion

  • w3390
  • · Replies 4 ·
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4

How to add and resolve vectors?

  • chanella35
  • · Replies 4 ·
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4

The Science of Sound: How Does It Travel from Source to Our Ears?

  • donkeycopter
  • · Replies 11 ·
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11

Calculate Radius of Earth Using Time to Set Sun: Homework Solution

  • rwx1606
  • · Replies 6 ·
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6

Solving Resonance: Ideas to Get Started

  • LTU83
  • · Replies 2 ·
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2

Finding electric force between two particles

  • theskyisgreen
  • · Replies 2 ·
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2

Tyrolean Traverse/Static Equilibrium Problem

  • ConstableZiM
  • · Replies 1 ·
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1

Solving Physics Vector Problems: Adding, Subtracting, and Finding Equilibrium

  • kittykatxox
  • · Replies 4 ·
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4

How Do You Calculate Initial Velocity of an Arrow Shot Straight Up?

  • swatmedic05
  • · Replies 6 ·
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6

Uniform Circular Motion: Understanding the Characteristics and Misconceptions

  • needhelpfast
  • · Replies 4 ·
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4

How Much Additional Mass Can a Floating Air Mattress Support?

  • mizzy
  • · Replies 1 ·
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1

How Do You Calculate the Nominal Interest Rate Compounded Differently?

  • aisha
  • · Replies 5 ·
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5

Trying to Understand Accel Vectors

  • eriadoc
  • · Replies 6 ·
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6

How Do You Convert Plane Speed from km/h to m/s?

  • Blaz3r
  • · Replies 3 ·
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3

Heat and internal energy of water temperature

  • mizzy
  • · Replies 6 ·
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6

Concave Mirror Homework - Find Object Dist.

  • Boxter
  • · Replies 9 ·
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9
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14

What is the acceleration of the block in this system?

  • ooohlala
  • · Replies 1 ·
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1

Find position and velocity at specific time

  • JJBladester
  • · Replies 9 ·
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9

Properties of Light: Straight Line or Transverse Wave?

  • logearav
  • · Replies 2 ·
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2

How Do You Calculate Energy Transfer in a Circuit Component?

  • mjwilson94
  • · Replies 3 ·
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3

Parallel resistance and heat problem

  • KauGan
  • · Replies 2 ·
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2

Vector magnitude and displacement

  • jpd5184
  • · Replies 5 ·
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5

How Do You Calculate the Correct Components of a Force Along Tether Lines?

  • quantum_enhan
  • · Replies 3 ·
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3
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2

What is the Maximum Horizontal Distance for a Gazilcher Launch?

  • xSPARX
  • · Replies 1 ·
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1

How do I calculate the time of flight for a horizontally fired cannonball?

  • needhelpfast
  • · Replies 2 ·
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2

Initial Velocity and Acceleration-

  • needhelpfast
  • · Replies 2 ·
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2
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4

Calculating Work and Power from Ocean Water Pumping

  • Ogakor
  • · Replies 1 ·
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1

Issues finding time in acceleration problem

  • bracing
  • · Replies 3 ·
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3

Finding angles vectors make with the positive x-axis

  • uchicago2012
  • · Replies 9 ·
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9

Finding vectors in Cartesian Coordinates

  • uchicago2012
  • · Replies 1 ·
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1

Acceleration, velocity and position

  • npena29
  • · Replies 1 ·
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1

Solving Frictionless Horizontal Motion: Find Block's Speed

  • jti3066
  • · Replies 4 ·
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4

Vector Magnitude Homework: Room Dimensions & Displacement

  • jpd5184
  • · Replies 1 ·
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1

Why do different pipes/strings make different sounds?

  • donkeycopter
  • · Replies 6 ·
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6

Gradient of Wavelength vs Period Graph?

  • donkeycopter
  • · Replies 1 ·
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1

Average Velocity Vector Diagram

  • ThomasMagnus
  • · Replies 3 ·
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3
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1

Ball falls from top of cliff; kinematics

  • dansunefusee
  • · Replies 4 ·
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4

Unknown distances, constant speed, average velocity

  • oceanbunny
  • · Replies 1 ·
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1

Finding Vector Lengths: Can't figure out what I am doing wrong

  • lanzjohn
  • · Replies 1 ·
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1
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1

What is the speed of the electron as it strikes the second plate?

  • popo902
  • · Replies 2 ·
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2

How Does a Car Overtake a Truck After a Traffic Light Turns Green?

  • CHARG3RS
  • · Replies 1 ·
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1

Calculating angle between two vectors

  • jpd5184
  • · Replies 1 ·
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1

How to Build a Cart Using Household Materials for a Physics Project

  • Bologna
  • · Replies 4 ·
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4

Use conservation of energy to determine the angular speed of a spool

  • mizzy
  • · Replies 5 ·
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5

How Do You Rearrange Kinematic Equations Effectively?

  • Siege
  • · Replies 2 ·
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2

What types of equations are more general than IVPs?

  • farleyknight
  • · Replies 5 ·
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5

What is the initial speed of the water

  • swatmedic05
  • · Replies 3 ·
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3

Calculating Force on Windscreen from Water Spray

  • kalupahana
  • · Replies 7 ·
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7

A Matter of Wheels and Trains and The Spin of the Earth?

  • modulus
  • · Replies 1 ·
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1

What is the acceleration of the rocket?

  • kalupahana
  • · Replies 1 ·
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1

What Are the Velocities of the Broken Parts in a Plane Explosion?

  • kalupahana
  • · Replies 1 ·
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1

How Long Until the Police Car Overtakes the Speeder?

  • delfam
  • · Replies 3 ·
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3

Conceptual Question on the Force of a relaxed spring

  • Kibbel
  • · Replies 1 ·
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1

RAIN FALL QUESTIONS-CAN'T FIND PART 4 about kg

  • tmoney23
  • · Replies 6 ·
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6

RLC circuit - total impedance,phasor analysis (mainly checks)

  • pat666
  • · Replies 4 ·
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4

How Do You Calculate Fringe Spacing in Single Slit Diffraction?

  • pat666
  • · Replies 13 ·
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13

WHAT IS THE WORK DONE THAT IS DISSIPATED AS HEAT?

  • jinx007
  • · Replies 9 ·
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9

Finding Tension and w2: Solving for Angle Alpha

  • dvsumosize
  • · Replies 5 ·
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5

Method of Image Charges - Range of validity of solutions

  • RoyalCat
  • · Replies 1 ·
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1

Solving Coulombs Law & Trig via Diagram

  • prof chaos
  • · Replies 1 ·
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1

Conceptual question on black bodies

  • fluidistic
  • · Replies 1 ·
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1

Determin the Electric Potential Difference

  • kvarner83
  • · Replies 1 ·
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1

An electron is shot between plates

  • Gizmo44
  • · Replies 4 ·
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4

Motion Equation with constant speed (Time sensitive )

  • lanzjohn
  • · Replies 2 ·
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2

Analyzing Particle Motion in Polar Coordinates

  • lax1113
  • · Replies 1 ·
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1

Tarzan's Swing: What's the Tension in the Vine?

  • seto6
  • · Replies 7 ·
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7

Horizontal Range and Maximum Height of a Projectile

  • darbeecakes
  • · Replies 3 ·
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3

What are the Tensions in a System of Fixed Point Charges?

  • scott85213
  • · Replies 2 ·
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2

1 Dimensional Kinematics Problem

  • Skizye
  • · Replies 5 ·
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5

Electric field over a non uniform surface charge

  • dpaulson
  • · Replies 5 ·
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5
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3

Light Diffraction Homework: 2 Wavelengths & Angle of Coincidence

  • pat666
  • · Replies 3 ·
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3

Calculating Jet Plane's Acceleration After Full Throttle

  • Allura
  • · Replies 4 ·
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4

Solving Tension Force Problem in APB Juniors

  • Otaku Love
  • · Replies 1 ·
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1

Calculating Initial Speed from 2D Kinematics Problem

  • brushman
  • · Replies 2 ·
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2